tom675 Posted November 2, 2014 Report Share Posted November 2, 2014 I have 2000 315 mont, iv already changed the caliper got the newer ajp one, put front brake is terrible, iv bled the system through and checked caliper pistons, all ok. So im thinking the issue may be with the grimeca master cylinder? Any tips or am i wasting my time with this old style master cylinder? Quote Link to comment Share on other sites More sharing options...
walkertrials Posted November 2, 2014 Report Share Posted November 2, 2014 I would first try some quality brake pads, I had a simular problem with my Gas Gas and a change of pads did the trick. Quote Link to comment Share on other sites More sharing options...
2stroke4stroke Posted November 2, 2014 Report Share Posted November 2, 2014 Try dragging the brake to get it hot then spray water on it. Easier than fitting new pads. May need to repeat. Quote Link to comment Share on other sites More sharing options...
ham2 Posted November 2, 2014 Report Share Posted November 2, 2014 Had a 98 Cota with a Grimeca master cylinder which, after changing everything else first, turned out to be ineffective. Quote Link to comment Share on other sites More sharing options...
vanman1950 Posted November 2, 2014 Report Share Posted November 2, 2014 As 2stroke4stroke has said get the disc hot and pour water on the disc, brake will then bite really well I have had two pre four pot monts and both had problem. The other way is fit the four pot caliper. Quote Link to comment Share on other sites More sharing options...
barfy Posted November 4, 2014 Report Share Posted November 4, 2014 Walkertrials, what would you call quality pads? I used to love Brembo pads, but can't seem to get them now. I've also found Goldfren don't work well when they get muddy or wet, which is quite often in the south. Quote Link to comment Share on other sites More sharing options...
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